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Focal domain controllable focusing supersonic transducer

A focused ultrasound and transducer technology, applied in the field of biomedical engineering, can solve the problems of high intensity, too small focal area, unsuitable for ultrasonic tumor hyperthermia system, etc., and achieve the effect of excellent performance, common material selection, and compact structure

Inactive Publication Date: 2005-08-03
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This technology has obvious shortcomings: its self-focusing ultrasonic transducer can only form a fixed position and constant size focal area, and the focal area is too small and the intensity is too high, which is not suitable for ultrasonic tumor hyperthermia system

Method used

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  • Focal domain controllable focusing supersonic transducer
  • Focal domain controllable focusing supersonic transducer
  • Focal domain controllable focusing supersonic transducer

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Embodiment Construction

[0017] In order to better understand the technical solution of the present invention, a further detailed description will be made below in conjunction with the accompanying drawings.

[0018] like figure 1 , 2 As shown, the structure of the focused ultrasonic transducer with controllable focal area of ​​the present invention is schematically shown, and it is composed of a large-aperture rigid spherical cap 1 and several spherical array elements 2 distributed in a regular and equidistant square array structure. A number of circular small holes are discretely distributed on the spherical crown body 1 according to a regular, equidistant square matrix structure, and each small hole is used to inlay an array element 2 .

[0019] The radius of curvature of the large-aperture rigid spherical cap 1 is R, and in the embodiment R=215mm, which depends on the radius of curvature r of the array element, r=160mm in the embodiment, and the size of the focal area of ​​the array element itsel...

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Abstract

The present invention provides a kind of focus domain controllable focusing supersonic transducer for supersonic tumor thermotherapeutic system, and belongs to the field of biomedicine engineering technology. The transducer consists of one great aperture rigid spherical crown with regularly distributed small holes and several spherical supersonic transducer elements arranged regularly and embedded inside the small holes. The array of the present invention may form different focus domain distributing modes, so that the supersonic beam can keep away from bone and other barriers. The supersonic power of the array radiates may be controlled by regulating the amplitude of electrically exciting signal to maintain the treating temperature on the target tissue. The present invention has compact structure, excellent performance, flexible operation and wide application foreground.

Description

technical field [0001] The invention relates to an ultrasonic transducer, in particular to a focused ultrasonic transducer with controllable focal region, which is applied to an ultrasonic tumor hyperthermia system and belongs to the technical field of biomedical engineering. Background technique [0002] Existing ultrasonic tumor hyperthermia systems, such as the SONOTHERM 1000 ultrasonic cancer treatment system produced by United Pharmaceutical Group LABTHERMICS, use planar ultrasonic transducers, whose sound waves radiate in the vertical direction and energy is dispersed. The sound intensity formed on the internal tissue of the human body is not only impossible to be higher than the sound intensity at the body surface, but also is significantly reduced due to the absorption of the tissue on the radiation path. The deeper the body is, the greater the difference between the two is. The depth is not deep, on the other hand, it will make the patient feel pain, burn the surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N7/02B06B3/04
Inventor 陈亚珠萧翔麟倪养华
Owner SHANGHAI JIAO TONG UNIV
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